Gorehowl, Might of the Warchief is an HD version of one of the most iconic weapons in World of Warcraft's history, and is a reward able to drop from the Dawn of the Infinite mega-dungeon. Players have discovered an Easter Egg associated with this axe — it can summon the spirit of Grommash Hellscream!
Thank you to Conmanw for this information!
Forged for the chieftains of the Warsong clan, Gorehowl was most famously wielded by Grommash Hellscream, who used it to split open the head of the pit lord Mannaroth, freeing the orcs from the blood curse. Later, Gorehowl was wielded by his son, Garrosh Hellscream.
The axe can drop from the Time-Lost Battlefield encounter in the Dawn of the Infinite mega-dungeon, where an alternative universe version of Grommash Hellscream leads the Horde in endless battle against an Alliance led by alternative-universe Anduin Lothar.
In order to see the spirit of Grommash Hellscream, players appear to need to meet the following requirements.
Once all these requirements are met, the spirit of Grommash Hellscream occasionally spawns to salute you!
Image credit — Conmanw